American Journal of Engineering Research and Reviews


Comparison of Solar Irradiance between WRF simulation and Deep Learning: Case study in Nishi Akisawa, Japan

Research Article of American Journal of Engineering Research and Reviews Comparison of Solar Irradiance between WRF simulation and Deep Learning: Case study in Nishi Akisawa, Japan Jose Manuel Soares de Araujo Gifu University Faculty Of Engineering and Graduate School Of Engineering 1-1 Yanagido, Gifu City 501-1193, Japan A This paper presents a study of evaluation for the reliability of seven-days direct normal irradiance (DNI) and diffuse irradiance (DIF) forecasts which provided by Weather Research and Forecasting (WRF) mesoscale model using six-hourly interval 0.5°x0.5° input dataset obtained from National Oceanic and Atmospheric Administration - National Operational Model Archive and Distribution System (NOMADS) website. 3 km spatial resolution was used to estimate seven-days simulation starting from 1st to 7th January 2017 for comparison purpose. Long short-term memory (LSTM) algorithm has been applied to make future prediction. The one-hourly values input dataset of LSTM obtained from Nishi Akisawa mega solar website is consist of one-year data of solar irradiance starting from 1st January to 31st December 2016. This dataset divided into training datasets (89%) and testing datasets(11%) where the testing datasets values was used to make future prediction of solar irradiance. The result shows the error of root mean square of LSTM algorithm is 129 W/m2 higher compare to 101 W/m2 from the WRF model for seven-days prediction but the result of this study proposed using LSTM algorithm for future prediction of solar irradiance or others parameter of weather. Highlights • Comparison of future prediction of solar irradiance has done in Nishi Akisawa-Japan; • This study applied NOAA-NOMADS dataset as input dataset of WRF; • Input data of LSTM algorithm obtained from Nishi Akisawa mega solar weather station; • LSTM algorithm shows error of RMSE is higher compared to WRF model. Keywords: environmental impact, recession, water supply, lake, and hygiene ...

Environmental Consequences of Receded Iyi-Ocha Lake Surrounded by Federal Polytechnic Oko, Amaokpala and Nanka Communities

Research Article of American Journal of Engineering Research and Reviews Environmental Consequences of Receded Iyi-Ocha Lake Surrounded by Federal Polytechnic Oko, Amaokpala and Nanka Communities Otti V I and DanNwafor K Federal Polytechnic Oko The purpose of this project is to share the finding of study and advocate the need for the administration of Federal Polytechnic Oko to undertake the issue of providing Water to the Polytechnic community as paramount and the solution to the receding Iyiocha lake which could useful in the provision of water. The poor state of water and sanitation facilities in the campus particularly the permanent site is a major factor for the declining health and the reduction in productivity among the students and staff. The major water and sanitation related ailments reported in the school apart from malaria are diarrhea and worm infestation, which indicates that water and sanitation facilities are inadequate in the campus and to ascertain the cause of solution to the receding lake. Therefore, there is a need for such facilities to be provided and upgraded in spite of the environmental consequences of the receding lake which is to be (-1.1) due to environmental impact, also in the rainy season to observe good contribution of water from the lake to the ground water ,as it ceases to discharge to the Lake during rainy season. The main objectives are to identify enough water to serve the population with adequate water supply and promoting better health practice focusing on the use of clean water, good hygienic and proper excretion disposal. Moreover rainfall data was collected from the department of Geography and Meteorology, Nnamdi Azikiwe University Awka, was used to determine. Keywords: environmental impact, recession, water supply, lake, and hygiene ...

Implication of Environmental Impacts Assessment on Construction Projects in Nigeria

Review Article of American Journal of Engineering Research and Reviews Implication of Environmental Impacts Assessment on Construction Projects in Nigeria OTTI, V.I., NWAFOR, A.U. AND DANNWAFOR, K. CIVIL ENGINEERING DEPARTMENT FEDERAL POLYTECHNIC OKO The paper describes the consequence of environmental development as degrading, disrupting process to social activities, leading to unconducive life through economic, social system and cultural value. Environment and Development complementing each other, where a carefully nurtured environment continues to provide the basis for continuous development. Keywords: Environment, consequence, project, impact,development, economy, social ...

Optimization of the number, size and placement of D-STATCOM in radial distribution network using Ant Colony Algorithm

Research Article of American Journal of Engineering Research and Reviews Optimization of the number, size and placement of D-STATCOM in radial distribution network using Ant Colony Algorithm A. OLOULADE1, A. MOUKENGUE IMANO2, A. VIANNOU3, H. TAMADAHO 1 1Electrotechnic, Telecommunications and Informatics Laboratory (LETIA) University of Abomey-Calavi Cotonou, Benin;2 Electronic, Electrotechnic, Automatic and Telecommunications Laboratory (LEEAT) University of Douala Douala, Cameroon;3Ecole Doctorale, Science de l’ingénieur University of Abomey-Calavi Cotonou, Benin This paper investigate an approach based on Ant Colony Optimization to identify optimal size, number, cost and placement of D-STATCOMs in radial distribution systems. Objective functions integrating power loss, voltage deviation and cost minimizations are solved by Ant Colony algorithm developed in MATLAB. This algorithm is tested on the IEEE 33- bus system and on a real distribution network of SBEE (Beninese Society of Electrical Energy). As results, it is observed that losses are reduced to 22.42 percent for IEEE 33-bus system with five D- STATCOMs and global installation and operating estimated cost of 3546762.35 dollars in first, and then, losses are reduced to 61.63 percent with four D-STATCOMs and cost of 2493146.29 dollars for a real distribution system of SBEE. Keywords: D-STATCOM, optimal placement, radial network, ant colony optimization, power loss ...

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American Journal of Engineering Research and Reviews

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